AI agents call get_signals_summary to retrieve information from Refinex without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and summarizes existing signal data with no modification, creation, deletion, or execution of external operations. It is a simple data retrieval operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'get_signals_summary' indicates data retrieval. Server description states the tool enables 'querying live AWS spot price arbitrage signals and suppression logs', and sibling tools (get_health, get_live_signal, get_signal_for_instance,…
Attacks that exploit this kind of access
get_signals_summary. It is categorised as a Read tool in the Refinex MCP Server, which means it retrieves data without modifying state.
Register the Refinex MCP server in PolicyLayer and add a rule for get_signals_summary: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Refinex. Nothing to install.
get_signals_summary is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_signals_summary rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_signals_summary. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_signals_summary is provided by the Refinex MCP server (keithrawlingsbrown/refinex-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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